The RAC Rescue helicopter has taken a man to Royal Perth Hospital following a car and truck crash on South Western Highway in Balingup.
The emergency rescue helicopter landed at the hospital around 3:45pm.
South Western Highway's left lane (northbound) is blocked between Russell Road and Hawterville Road, Balingup.
Right lane (Northbound) has reopened.
Left and right lanes (Southbound) has reopened.
Speed restrictions in place, expect delays.